[PATCH RFC 59/77] qla2xxx: Update MSI/MSI-X interrupts enablement code

Alexander Gordeev
2013-10-02T10:49:15Z

As result of recent re-design of the MSI/MSI-X interrupts enabling
pattern this driver has to be updated to use the new technique to
obtain a optimal number of MSI/MSI-X interrupts required.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
---
drivers/scsi/qla2xxx/qla_isr.c | 18 +++++++++++-------
1 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index df1b30b..6c11ab9 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -2836,16 +2836,20 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
for (i = 0; i < ha->msix_count; i++)
entries[i].entry = i;

- ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
- if (ret) {
+ ret = pci_msix_table_size(ha->pdev);
+ if (ret < 0) {
+ goto msix_failed;
+ } else {
if (ret < MIN_MSIX_COUNT)
goto msix_failed;

- ql_log(ql_log_warn, vha, 0x00c6,
- "MSI-X: Failed to enable support "
- "-- %d/%d\n Retry with %d vectors.\n",
- ha->msix_count, ret, ret);
- ha->msix_count = ret;
+ if (ret < ha->msix_count) {
+ ql_log(ql_log_warn, vha, 0x00c6,
+ "MSI-X: Failed to enable support "
+ "-- %d/%d\n Retry with %d vectors.\n",
+ ha->msix_count, ret, ret);
+ ha->msix_count = ret;
+ }
ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
if (ret) {
msix_failed:
--
1.7.7.6